I have an '08 avenger that takes 18" low profile tires and in winter i down
size to 215/65R16. If you have the built in tire pressure sensor as i do it
will make a difference in your gas mileage when you down size unless
you can get a 16" rim with the built in tire pressure sensor. When i switch
over in the winter my steel rims do not have the sensor so my tire
pressure light stays on continuously and my gas usage doubles.